Furuno FA - Guard Zone Reference; Guard Zone Shape and Stabilization

3. ARP OPERATION
3-25
[ARP•AIS]
1 BACK
2 GUARD ZONE STAB
STAB HDG/STAB NORTH
3 GUARD POLYGON
OFF/STAB GND/
STAB HDG/STAB NORTH
4 [TRIAL MANEUVER]
5 [ARP SYMBOL]
6 [AIS SYMBOL]
7 [FUSION]
8 AIS FUNCTION
OFF/ON
3.13.4 Guard zone reference
The guard zone may be referenced to heading or North as follows:
1. Roll the trackball to choose the MENU box at the right side of the screen and
then push the left button.
2. Roll the wheel to choose 4 ARP•AIS and then push the wheel or the left
button.
ARP•AIS menu
3. Roll the wheel to choose 2 GUARD ZONE STAB and then push the wheel or
the left button.
4. Roll the wheel to choose STAB HDG or STAB NORTH as appropriate and
then the push the wheel or the left button.
5. Push the right button twice to close menu.
3.13.5 Guard zone shape and stabilization
The shape of the No. 2 guard zone may be a sector or a polygon having up to
10 points. (The shape of the No.1 guard zone is always a sector.)
1. Roll the trackball to choose the MENU box at the right side of the screen and
then push the left button.
2. Roll the wheel to choose 4 ARP•AIS and then push the wheel or the left
button.
3. Roll the wheel to choose 3 GUARD POLYGON and then push the wheel or
the left button.
4. Roll the wheel to choose OFF, STAB GND, STAB HDG or STAB NORTH as
appropriate and then the push the wheel or the left button.
OFF: Guard zone is a sector; number of points limited to four.
STAB GND: Guard zone stabilized against ground; guard zone may be a
polygon having 3-10 points.
STAB HDG: Guard zone stabilized against heading; guard zone may be
a polygon having 3-10 points.
STAB NORTH: Guard zone stabilized against ground; guard zone may be a
polygon having 3-10 points.
5. Push the right button twice to close menu.